31427106451 has 4 divisors (see below), whose sum is σ = 33844576192. Its totient is φ = 29009636712.

The previous prime is 31427106443. The next prime is 31427106467. The reversal of 31427106451 is 15460172413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31427106451 - 2³ = 31427106443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31427109451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208734851 + ... + 1208734876.

It is an arithmetic number, because the mean of its divisors is an integer number (8461144048).

Almost surely, 2^31427106451 is an apocalyptic number.

31427106451 is a deficient number, since it is larger than the sum of its proper divisors (2417469741).

31427106451 is a wasteful number, since it uses less digits than its factorization.

31427106451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417469740.

The product of its (nonzero) digits is 20160, while the sum is 34.

Adding to 31427106451 its reverse (15460172413), we get a palindrome (46887278864).

The spelling of 31427106451 in words is "thirty-one billion, four hundred twenty-seven million, one hundred six thousand, four hundred fifty-one".